Method for preparation of conjugated arylene or heteroarylene vinylene polymer and device including same
CA 2131259 C · Owner: Papadimitrakopoulos, Fotios · Inventors: Papadimitrakopoulos, Fotios; Galvin-Donoghue, Mary E.; Chandross, Edwin A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A technique is described for the preparation of conjugated arylene and heteroarylene vinylene polymers wherein conversion of the polymer precursor is effected at a temperature ranging from 150-300°C in the presence of forming gas. Studies have shown that the presence of the forming gas suppresses the formation of carbonyl groups so resulting in an enhancement in photoluminescence and electroluminescence efficiency of the polymer.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed August 31, 1994 and granted February 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 2016.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.